Precautions for selection of continuous feeding and discharging rotary tube furnace

When choosing a continuous feeding and discharging rotary tube furnace, the following precautions should be taken:

Commonly used laboratory rotary furnaces (click on the image to view product details)

Clear temperature requirements for use:
Different experiments and production processes have different temperature requirements. For example, in the annealing process of semiconductor materials, a temperature range of 400~600 ℃ is usually required; The preparation of high-performance carbon nanotubes may require high temperatures of up to 1000 ℃ or higher.
When choosing a tube furnace, it is important to ensure that its maximum operating temperature can meet actual needs, and to cope with possible temperature fluctuations and future experimental changes, it is best to reserve a temperature margin of 100-200 ℃.

Consider the length of the temperature zone:
The length of the temperature zone determines the size of the area where the sample can be uniformly heated. For a rotating tube furnace with continuous feeding and discharging, it is necessary to ensure that the length of the insulation zone is long enough to ensure that the sample can be uniformly heated during the rotation process.
When selecting, please ensure that the length of the constant temperature zone is greater than the size of the sample in order to achieve uniform heating.

Choose the appropriate pipe diameter:
The selection of pipe diameter size should be determined based on the size and shape of the experimental sample. If larger reaction tubes are used in the experiment or larger sample volumes need to be processed, a tube furnace with a larger diameter should be selected.
For a rotary tube furnace with continuous feeding and discharging, it is also necessary to consider the smoothness of the sample during the feeding and discharging process, to avoid blockage or sample damage caused by too small a pipe diameter.

Choose the appropriate furnace structure:
The rotary tube furnace rotates the tube during the heating process to improve the uniformity of powder processing/coating, which is suitable for occasions with high requirements for powder processing or coating uniformity.

Consider vacuum and atmosphere protection requirements:
In the preparation and processing of many materials, heating is required in a vacuum or specific atmospheric environment to avoid reactions between the materials and components in the air.
If the experiment has high environmental requirements, a tube furnace with vacuum and atmosphere protection functions must be selected. For a rotating tube furnace with continuous feeding and discharging, it is also necessary to ensure that the vacuum and atmosphere protection system can coordinate and cooperate with the feeding and discharging system to ensure the smooth progress of the experimental process.

Pay attention to heating elements and furnace tube materials:
The maximum operating temperature depends on the type of heating element. For example, the maximum temperature of a molybdenum resistance wire heating element is about 1200 ℃, the maximum temperature of a silicon carbide heating element is about 1400 ℃, and the maximum temperature of a MoSi2 heating element is about 1700 ℃.
When selecting, it is important to ensure that the type of heating element meets the maximum temperature requirements required for the experiment.
At the same time, it is necessary to choose the furnace tube material that corresponds to the highest temperature of the furnace. For example, the maximum temperature of a quartz tube is about 1200 ℃, and the maximum temperature of an alumina tube is about 1700 ℃.

Considering the convenience and safety of operation:
Choose a tube furnace that is easy to operate and maintain in order to improve experimental efficiency and reduce maintenance costs.
Ensure that the tube furnace has complete safety protection functions, such as over temperature protection, over-current protection, leakage protection, etc., to ensure the safety and reliability of the experimental process.

Customized rotary tube furnace with preheating (click on the image to view product details)

Click to learn more tube furnaces! Or click on online customer service to learn more about product information!